Quantum filaments in dipolar Bose-Einstein condensates
Quantum filaments in dipolar Bose-Einstein condensates
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DOI：
10.1103/physreva.93.061603
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发表时间：
2016-01
影响因子：
2.9
通讯作者：
F. Wächtler;Luis Santos
中科院分区：
文献类型：
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作者：
F. Wächtler;Luis Santos
偶极玻色-爱因斯坦凝聚体的坍缩可以被量子涨落所阻止。由于偶极-偶极相互作用的各向异性，由软激发引起的偶极驱动的坍缩由硬激发的量子涨落引起的排斥的李黄杨贡献补偿，在一个类似的机制，最近提出的玻色-玻色混合。这种被阻止的坍缩导致了自结合的类金属液滴，为最近的镝实验提供了一种解释。被捕的不稳定性和液滴的形成是新的一般功能直接连接到偶极-偶极相互作用的性质，因此应该在所有未来的实验中发挥重要作用，强偶极气体。
Collapse in dipolar Bose-Einstein condensates may be arrested by quantum fluctuations. Due to the anisotropy of the dipole-dipole interactions, the dipole-driven collapse induced by soft excitations is compensated by the repulsive Lee-Huang-Yang contribution resulting from quantum fluctuations of hard excitations, in a similar mechanism as that recently proposed for Bose-Bose mixtures. The arrested collapse results in self-bound filament-like droplets, providing an explanation to recent dysprosium experiments. Arrested instability and droplet formation are novel general features directly linked to the nature of the dipole-dipole interactions, and should hence play an important role in all future experiments with strongly dipolar gases.